Paint spraying device



Dec ]1@, 1935. I E, Q ONGE 2,023,71U

PAINT SPRAYING DEVICE Filed Feb. 17, 1932 A TTORNEYS.

Patented Dec. 10, 1935 UNHTED STATES PATENT )FFICE PAINT SPRAYING DEVICE 'Ephrem C. St. Onge, Holyoke, Mass. Application February 17, 1932, Serial No. 593,577 8 Claims. (01. 299-63) This invention relates to improvem t i leaving a chamber 26 between them and a champaint spraying devices, and has for its object her 27 above the pp pi the improvement of prior devices of this kind Into the a be 27 leads a hole 30 extendand the correction of defects inherent in their e through the extension 23 and the tube 2|.

operation. Paint spraying devices of the com- A Slide Valve 3| is normally held y a bow Spring 5 pressed air type are unsatisfactory for many 32 in the position of Fig. 2 in which it closes this purposes because of their large waste of paint hole, but c be moved d w against t e f rce and the injury to the health of the user conse- Of this Spring by a d s rod Slides verquent upon the dispersion of extremely fine partieelly in Suitable bearings and at t pp d J ticles of paint in the surrounding air. One speis contacted by e finger level 34 pivoted by a cific object of the invention is the production Screw 35 p a le ecured to the motor of a paint spraying device which will reduce the housing and to the central frame t. By pu n dispersion of th paint t point Where t this lever with the finger the slide valve 3| may waste of paint and the amount breathed by the be Shifted t0 Open the hole When e fi ge user will be made negligible. A further specific D is releaeed the Spring 32 in C ses object is to make a portable device vwhich is the valve. When the valve 3! s in p postlight and sim le i o t ti and positive tion the hole 393 communicates with a chamber in action, A further specific object i to 3'! which is connected to the interior of the cenvent the expulsion of paint globules of excessive trail frame by nozzle 33 Which Will be d size due to collection of paint upon the interior scribed in detail belOW- surfaces of th spraying device A furth r The motor shaft is shouldered at 39 to receive a ject is to provide a simple and eifective control disk 443 having an upturned fl e extending for regulating the width of the band of paint freely into an annular o v n t e bearing sprayed with the de i block l8. The shaft is also shouldered at M to Q; While the invention may be embodied in difreceive n impellins disk 42 secured in place y H ferent mechanical structures, the preferred form a threaded Collar 43 and a 100k nut The a of mechanism has been chosen for illustration tom of the impening disk is provided With a in the dr in i hi h series of radial ribs e5 the active edges of which Fig, 1 is a, ide le ti of a spraying device are preferably undercut as at 36 (Fig. 5). As the made in accordance with the invention; paint is forced y the Screw p through on Fig. 2 is a central section through the device, the Chamber 37 and the nozzle 33 the pa t, in taken on a scale somewhat larger than Fig, 1; e fi e jet due to the constricted opening of the Fig. 3 is a section on h m 3 3 of Fj g 2; nozzle, strikes against the lower surface of the Fig. 4 is a detail of the lower side of the paint rapidly rotating disk each undercut surface .l, spraying disk; and 46 picking up a small quantity. As the disk con- Fig. 5 is a section on li 5 5 of Fig 4 tinues to rotate the paint is carried by cen- The spraying device is mounted upon a base trifugal force outwardly along the undercut surmember in, threaded at H t hi h is a Cork faces of the ribs and is finally discharged in the tainer I2. A central frame I3 is secured to the form of a fan-Shaped hand through a Slot 4'! in base It] as by screws l4 and supports on its upper the central frame- Side the housing f a motor 5 which has not The structure has been designed to prevent the been illustrated in detail. The shaft it of the e of large Size? drops 9 Paint to the motor is fitted in the inner race of a ball bearing mevltable accumulation of hqmd at dlfierent H, the outerrace of which is carried in a bearpoints 2 m the g i The .interior of the ing blocklB. At its lower end the motor shaft tram-e 15 forms Wlth comcal Surf-ace extends well within the container l2 furnish- Slantmg imwardly so that any drops forum-1g W111 I) g pp for a p p rotor I 9 secmjed to the run back upon the upper surface of the disk 42, shaft as y a bayonet lock 20 A pum tube 2 I which is formed with radial undercut ribs 49 to is secured by threads 22 within a tubular ex iitomlzef any such drops ff g eject them in the 50 tension 23 of the base II], a packing washer 24 inner 3 g g g mg g g ifi fi 50 0 Other S a preventing t Paint from following groove 5| in the disk 42, and is provided with up t e motor shaft pr vanes are formed drain holes 52. Drain holes 53 are also provided OIltIEhEhIOtPIt It, extfe gl gt am Zll mt; zontfilt in the base [0 southat any accumulation of paint W1 e in erlor o e u e re era y elow t e disk will be returned to the con- 55 the vanes 25 are divided into spaced groups, tainer I2. 55

In order to adjust the width of the fan-shaped spray which is ejected from the slot 41 the nozzle 38 is made movable in a direction across the surface of the disk 42. When the nozzle is located nearer the center of the disk the paint has a longer radial travel before ejection. During this longer travel it spreads out over a greater radial area in the undercut sides of the ribs, resulting in a longer period being utilized in ejecting each paint charge from a rib. Therefore with the nozzle near the center of the disk the fan-shaped spray will cover a wider angle than with the nozzle nearer the disks periphery. For the purpose of shifting the nozzle it is formed with a T-shaped base fitting under ways formed in the base Hi and ma member 54 secured to.

the base by suitable screws. Any desired provision for adjusting the slide in the ways may be used, that shown including apivoted lever 55 projecting through the side of the central frame. Adjustable guards 56 may also be used to close the edges of the slot 41 up to points adjacent the boundaries of the sprayto avoid chance spattering of paint.

The use of the device is very simple. The motor, controlled by a convenient switch which it is not necessary to illustrate, is set in motion. Paint is then raised by the vanes into the chamber 21. While the valve 3| is closed the paint will remain elevated in the chamber 21, there being suflicient clearance between the vanes and the tube 2i to permit continued rotation of the vanes. When the user desires to start the spray he depresses the trigger 34 and admits paint through the nozzle 38 to the underside of the rotating disk 42. The vertical jet of paint is deflected and thrown out in a horizontal fan-shaped spray.

' What I claim is:

l. A paint spraying device comprising a rotating disk having on one side a plurality of angular ribs with undercut sides, a nozzle, means for forcing a stream of paint through the nozzle, a housing partially surrounding the disk, and means for adjusting the nozzle to different positions radially'of the disk to thereby change the angular width of the spray discharged from the disk.

2. A paint spraying device comprising a casing, a motor secured to the casing and having a shaft extending vertically through it, a tube surrounding the shaft at its lower end, a receptacle secured to the casing to enclose said tube, impeller vanes mounted on the shaft within the tube to cause paint from the receptacle to rise through the tube, a disk secured to the shaft within the casing and having ribs formed on its lower surface, a nozzle mounted in the casing beneath the disk and connected by a passageway with the interior of the tube, and a valve interposed in the passageway to cut off the flow of paint through the nozzle, the casing being slotted adjacent the disk to permit the passage of paint thrown from the periphery of the disk. 7

3. A paint spraying device comprising a casing, a motor secured to the casing and having a shaft extending vertically through it,'-a pump connected to the lower end of the shaft, a receptacle into which the pump dips, a disk'secured to the shaft within the casing and having ribs formed on its upper and lower surfaces, a nozzle mounted in the casing beneath the disk and connected with the pump, the casing being slotted adjacent the disk to permit the passage of paint thrown from the periphery of the disk, and being shaped internally to cause drops of paint collecting within the casing above the disk to drop upon the upper surface of the disk.

4. A paint spraying device comprising a casing, a rotating disk within the casing, ribs extending in a generally radial direction upon both sides of the disk, means for directing a fine stream of paint against one side of the disk, and means for directing drops collecting within the casing against the other side of the disk.

5. A portable paint spraying device comprising a casing, a disk rotatably mounted in the casing, means carried by the casing for rotating the disk,

a paint receptacle supported by the casing, and

means for forcing paint from the receptacle directly against the under side of the disk, the casing completely enclosing the disk except for a slot adjacent the disk to permit the passage of a fan-shaped spray of paint.

6. A portable paint spraying device comprising a casing, a disk rotatably mounted in the casing and provided with outwardly extending undercut slots in its lower surface, means carried by the casing for rotating the disk, a paint receptacle supported by the casing, and means for forcing paint from the receptacle against the under side of the disk, the casing completely enclosing the disk except for a slot adjacent the disk to permit the passage of a fan-shaped spray of paint, and

at least one adjustable guard movable to vary the effective angular length of the slot.

7. A portable paint spraying device comprising a casing provided with a handle, an electric motor mounted on the casing, a paint receptacle carried by the casing, a disk mounted in the casing and rotated by the motor, said disk being provided with outwardly extending undercut slots in its lower surface and a pump carried by the casing and operable by the motor to draw a jet of paint from the reservoir and direct it against the under side of the disk, the casing completely enclosing the disk except for an arcuate slot opposite the disk that permits the ejection of a fan-shaped spray of paint, the casing and the parts carried by it constituting a self-contained unit supportable by the handle and movable thereby across the surface to be painted with no external connection other than the conductors carrying the electric current.

8. A paint spraying device comprising a rotating disk having a plurality of radiating open channels with undercut sides formed upon its lower surface and serving to hold the paint suspended against the force of gravity as the disk rotates, means for forcing a jet of paint under pressure directly against the under side of the disk to cause it to be picked up evenly by said channels, and a casing surrounding the disk and provided with an opening affording a direct passage for a fan-shaped spray of paint thrown off by the rotating disk.

EPHREM C. ST. ONGE. 

